public String find(String name){
String msg="";
if(name!=null){
if(accountService.find(name)>0){ //此行报空指针异常
msg="用户名正确";
}
else{
msg="用户名错误";
}
}
return msg;
}
public Integer find(String name) {
if (name != null) {
return accountMapper.find(name);
}else{
return 0;
}
}